| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.facet.taxonomy; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.lucene.facet.FacetsCollector.MatchingDocs; |
| import org.apache.lucene.facet.FacetsCollector; |
| import org.apache.lucene.facet.FacetsConfig; |
| import org.apache.lucene.index.BinaryDocValues; |
| import org.apache.lucene.search.DocIdSetIterator; |
| import org.apache.lucene.util.IntsRef; |
| |
| /** Reads from any {@link OrdinalsReader}; use {@link |
| * FastTaxonomyFacetCounts} if you are using the |
| * default encoding from {@link BinaryDocValues}. |
| * |
| * @lucene.experimental */ |
| public class TaxonomyFacetCounts extends IntTaxonomyFacets { |
| private final OrdinalsReader ordinalsReader; |
| |
| /** Create {@code TaxonomyFacetCounts}, which also |
| * counts all facet labels. Use this for a non-default |
| * {@link OrdinalsReader}; otherwise use {@link |
| * FastTaxonomyFacetCounts}. */ |
| public TaxonomyFacetCounts(OrdinalsReader ordinalsReader, TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc) throws IOException { |
| super(ordinalsReader.getIndexFieldName(), taxoReader, config, fc); |
| this.ordinalsReader = ordinalsReader; |
| count(fc.getMatchingDocs()); |
| } |
| |
| private final void count(List<MatchingDocs> matchingDocs) throws IOException { |
| IntsRef scratch = new IntsRef(); |
| for(MatchingDocs hits : matchingDocs) { |
| OrdinalsReader.OrdinalsSegmentReader ords = ordinalsReader.getReader(hits.context); |
| DocIdSetIterator docs = hits.bits.iterator(); |
| |
| int doc; |
| while ((doc = docs.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) { |
| ords.get(doc, scratch); |
| for(int i=0;i<scratch.length;i++) { |
| increment(scratch.ints[scratch.offset+i]); |
| } |
| } |
| } |
| |
| rollup(); |
| } |
| } |